Power on, fade in after 5.1.1 update...

Following the update to 5.1.1, when I switch on the Note 4 using the power button, the display fades in, slowly.

It takes ~1 second and is very annoying. I've been through display settings and a few other things, but nothing I do will make it appear instantly. I've tried a few web searches, but getting nothing relevant.

Anyone else see this? Anyone got a fix?

Thanks